55212299 has 2 divisors, whose sum is σ = 55212300. Its totient is φ = 55212298.

The previous prime is 55212293. The next prime is 55212331. The reversal of 55212299 is 99221255.

55212299 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55212299 - 2²⁰ = 54163723 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (55212293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27606149 + 27606150.

It is an arithmetic number, because the mean of its divisors is an integer number (27606150).

Almost surely, 2^55212299 is an apocalyptic number.

55212299 is a deficient number, since it is larger than the sum of its proper divisors (1).

55212299 is an equidigital number, since it uses as much as digits as its factorization.

55212299 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16200, while the sum is 35.

The square root of 55212299 is about 7430.4978971802. The cubic root of 55212299 is about 380.7839287575.

The spelling of 55212299 in words is "fifty-five million, two hundred twelve thousand, two hundred ninety-nine".